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1). DEVLIN. W CABLE ROAD CURVE.

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UNITED STATES PATENT O-TETCE.

DANIEL DEVLIN, OF ST. LOUIS, MISSOURI.

CABLE-ROAD CURVE.

SPECIFICATION forming part of Letters Patent 1\To.370, 38 September .1887. Application filed February 26, 1887. Serial No. 228,994. (No model.)

To aZZ whom it may concern:

Be it known that I, DANIEL DEVLIN, of St. Louis, Missouri, havemade a new and useful Improvement in Cable-Road Curves, of which the following is a full, clear, and exact description.

In cable roads as hitherto constructed the cable at a curve is carried around a series of sheaves properly located to cause the cable to conform to the trackway above. The sheaves, however, are respectively journaled upon fixed hearings, in consequence of which the sheaves are soon cut into and destroyed, and the cable is rapidly injured and worn away.

To diminish the difficulty referred to is the aim of the improvement under consideration, which consists, in the place of the series of sheaves upon stationary bearings, of a series of sheaves upon movable bearings, and so that each sheave, after coming into contact with the cable and into position to support it laterally, is carried along with the cable as long as it remains in contact therewith, and the excessive friction incident to the former practice thereby largely, if not entirely, prevented.

The most desirable mode of carrying out the improvement is illustrated in the annexed drawings, making part of this specification, in which Figure 1 is a horizontal section, on the line 1 1 of Fig. 4, of a cable-road curve in which the improvement is embodied. Fig. 2 is a horizontal section upon the line 2 2 of Fig. 3, which in turn is a vertical section on the line 3 3 of Fig. 2; and Fig. 4 is a vertical section upon the line 4 4 of Fig. 1. Fig. 5 is a detail View of the construction at the bottom of the columns shown in Fig. 4. The last three views are upon an enlarged scale.

The same letters of reference denote the same parts.

In the curve A, Fig. 1, two tracks, B and B, are provided for, and O and 0, respectively, represent the cables belonging thereto.

D D, &c., represent a series of sheave-bearing frames extending in the line of the inner track, 13, at the inner side of the curve of the cable 0. E E, 850., represent a similar series in the line of the outer track, B, at the inner side of the curve of the cable 0. The frames D D E E, 850., are similarly constructed, as follows: Attached to an upright spindle, F,

Figs. 2, 3, 4:, is a horizontal spider, G, in whose arms 9, respectively, are journaled the upright shafts h of the sheaves H H, &c. In this'manner eachframe D E, 850., is provided with a circular series of sheaves, and the outermost sheaves, respectively, of the several frames D D, &c., constitute the lateral bearing for the cable 0, and the outermost sheaves of the frames E E, &c., constitute the bearing for the cable 0.

The operation is as follows: The movement of the cable causes the frames D D, &c., to rotate horizontally upon their respective bearings f, as indicated by the arrows m, Fig. 2, and the sheaves in each frame are brought successive] y into position to sustain the cable. After a sheave has encountered the cable it rotates on its own axis 12, as indicated by the arrow y, Fig. 2, and it also, by reason of the described rotation of the sheave bearing frame, is carried along with the cable, as indicated by the arrow .2, Fig. 2, until its contact therewith ceases.

To provide for the sheave-bearing frames, a cellar, I, needs to be formed beneath the roadsurface J, Figs. 3, 4, and a frame-work introduced therein, substantially as follows:

K represents the roof of the cellar. Itis upheld by the posts L Lthat is, under each trackway there is a line' of posts, L, and a line of posts, L, arranged, respectively, at opposite sides of the slot M, and respectively supporting the parts an m, which form the slot. These parts in cable roads are apt to get out of place, sometimes spreading too far apart and sometimes closing too near together. To prevent this and to form a desirable tubeway for the cable, and also a space beneath the tubeway for receiving such dirt and moisture as may descend through the slot M, the posts are tied and braced apart at the lower end, as by means of the foot-plate Z, which in turn is secured to the floor N or other frame-work at the bottom of the cellar, and at a point between the foot-plate and the level of the cable, and preferably as near to the cable as is practicable, the posts are tied and braced together by means of, say, the bracket 0. The posts L are tied and braced apart in the'opposite direction by means of the beams P, as are also the posts in the line L. Beneath the footplates Z is a depression, Q, for draining away the moisture to any desired point. The bearings f are secured to thefloor N, and at the upper end the spindles F are journaled in bearings f in the roof K. There is a suitable guard-rail, R, for holding the cable 'in place when raised by the gripper. The sheaves H H, &c., are, by means of the slides h, capable of being adjusted radially upon the arms 9.

The strain of the cable is liable to tilt the frames D E, and to prevent this a support, S, Fig. 4, is introduced into the frame-work in the cellar, and the frame D E is provided with roller-bearings s to ride 'upon' said support, substantially as shown. The sheave-bearing frame D E is useful in many positions and places other than as shown in the drawings. It is also useful as a return-wheel at theend of a cable road, or at any place where the cable is to turn. To enable the frame to be arrested in its rotation without at the same time stopping the cable, a brake, T, Figs. 2, 3, is arranged in the cellar, and so constructed that by screwing the nut t onto the bolt t, which is jointed to the post L at t", the lever A is turned on its pivot t, and the shoe t thereby pressed against the spider rim and the frame thereby stopped. In this manner provision is made for adjusting or renewing any sheave upon the frame without interrupting the operation of the road.

I claim 1. The combination of a cable, a series of rotative frames, each provided with a circular 3. The combination of the parts at m, the

posts L L, the roof K, and the floor N, substantially as described.

4:. The combination of the parts m m, the posts L L, the roof K, the floor N, and the ties and braces Z O, substantially as described.

5. The combination, in a cable road, of the gripper-slot, the cable-tube, the cable, the guard-rail, and a series of rotative frames, each provided with a circular series of sheaves, substantially as described.

6. The combination of the rotative frame bearing the series of sheaves, the cable, and the brake adapted to bring the frame gradually to a stop, substantially as described.

7. The combination of the sheave-bearing frame and the cable, said sheaves being radially adjustable, as and for the purpose described.

8. The combination of the cable, the sheavebearing frame, and the support S, as and for the purpose described.

Witness my hand.

DANIEL DEVLIN.

Witnesses:

O. D. MooDY, A. M. EVERIST. 

